py/test/pytests/keyboard_static/keyboard.html

<test-template>
  <div id="keyboard-test-image">
    <div id="keyboard-keys"></div>
  </div>
  <i18n-label id="instruction-sequential">
    Press keys sequentially from top-left to bottom-right.
  </i18n-label>
  <i18n-label id="instruction-single-key">
    Press one key at a time.
  </i18n-label>
</test-template>